Tobacco pipe



April 5, 1938. MARTlN' i v2,113,181

Filed May 2l, 1936 Patented pr. 5, 1938 UNITE STTES PATENT OFFICEApplication May 21,

1936, Serial No. 80,934

In Canada June 6, 1935 4 Claims.

The principal objects of this invention are to eliminate many of thedisagreeable features incident to pipe smoking and to provide a pipewhich will effectively cleanse and cool the smoke before it reaches themouth of the smoker, and further, to eliminate the disagreeable featureknown as gurgling due to condensation of moisture in the smoke passage.

A further and important object is to materially reduce the cost ofmanufacture of the bowl of the pipe through the elimination oftheintegral stem.

The principal features of the invention consist in the novelconstruction oi a metal tube with the reduced end adapted to be securedin the orifice in the bowl and with the opposite end reduced to receivea bit or mouthpiece, the intermediate tubular portion containing a coreformed with a plurality of longitudinal passageways interconnected toform a plurality of smoke ducts of elongated circuitous form.

In the accompanying drawing, Figure 1 is an elevational View of a pipeconstructed in accordance with this invention.

Figure 2 is a longitudinal vertical mid-section of the pipe shown inFigure 1.

Figure 3 is a perspective detail of the grooved core enclose-d withinthe metal pipe stem.

Figure 4 is a plan view of the core shown in Figure 3 illustrating thearrangement of end openings to the circuitous passages.

Figure 5 is an enlarged view of one end of theA core shown in Figure 3.

Figure 6 is an enlarged view of the opposite end of the core shown inFigure 3.

Figure '7 is an enlarged cross section through the core shown in Figure4.

Figure 8 is a longitudinal sectional view on a smaller scale of a pipewith an elongated stem.

Many diierent forms of tobacco pipes have been devised to provide anelongated smoke passage for the purpose of cooling the smoke, but mostof these are of a very complicated form and are not conducive toproduction at the low cost of pipe that is demanded at the present time.

According to the present invention the bowl I is turned from a solidblock of material without a stem which of course effects a very materialsaving in the initial cost and the blanks from which the bowls are cutmay be cut much more economically.

The exterior of the bowl is shaped to any desired conguration and a hole2 is bored therein to extend into the bowl orifice 3. The walls of thehole 2 are threaded to receive a rolled threaded tube.

The stem 4 of the pipe is formed of a length of metal tubing swagedinwardly at the ends, the end 5 being provided with a large roll threadto lit the thread in the hole 2 of the bowl.

The opposite end 6 of the tubular stem 4 is reduced to t into thecounter-bored end of the mouthpiece 1.

Enclosed within the tube 4 is a core 8 preferably formed of wood and ofa cylindrical size -to t snugly within the inner wall ofy the enlargedcentral portion of the stem 4. This core is grooved longitudinally witha plurality of V- shaped grooves 9, but these grooves do not extend tothe end of the core. In the form shown there are six grooves. Anopposing pair of the intervening ribs I0 are unbroken from end to endand the two intervening ribs are provided with notches Ill at oppositeends.

A pair of holes II and I2 are bored diagonally from the bottom of theV-grooves 9 and at opposite sides of the unbroken longitudinal ribs andopen through the end of the core in a common orifice I3 whichcommunicates with the threaded stem end which threads into the bowl ofthe pipe.

At the opposite end of the core a pair of holes I4 and I5 are arrangedin an offset diagonal relation to the holes II and I2. This arrangementis particularly shown in Figures 4 and 7 and alsol in Figures 5 and 6,but on reference to Figure 4 it will be seen that the hole II openingthrough the bowl end of the core is arrange-d on one side of theunbroken rib I 0 and the hole I4 at the opposite end of the core is onthe opposite side of this rib. The smoke entering the V-groove in thecore through the hole II passes throughout the length of the core to anotch Ill', then Hows back toward the bowl end and through the nextadjacent notch and then back to the stem end from whence it passes outthrough the hole I5. Likewise the smoke entering the hole I2 at the bowlend passes to the front end of the core through a notch, back to 4 thebowl end, and through another notch and back to the stem end, passingout through the hole I4.

There are therefore two circuitous passages extending the length of thestem, and when sucd most passage, as naturally the moisture will run tothe lower passage, the other passage will be clear. Consequently thepressure of air from the bowl side will nd egress through the freepassage and will not try to force past the impeding moisture drop, whichin the ordinary pipe with a single passage, causes gurgling.

It will be understood that the smoke-laden air passing through theback-and-forth longitudinal passages in close association with theheat-absorbing metal stem, said stem readily absorbs the heat and coolsthe smoke, and the heat readily radiates from the metal surface to thesurrounding air.

The core is encased within a seamless tube, which as previously stated,is swaged down to the desired diameter of tube to enter the threadedhole in the bowl, and at the other end is swaged down to t into theopening in the mouthpiece. The double passage through the core leadsfrom a single opening from the bowl to the single opening in themouthpiece. Any objectionable matter condensing in the threaded end ofthe tube may be removed by blowing on the mouthpiece end or even bywashing if desired.

A pipe such as described is extremely desirable from the smokersstandpoint as it always remains clean and is free from the numerousobjections found in the ordinary type of pipe.

It is also of a very simple construction and therefore may be obtainedat a moderate cost.

Where an extra cool smoke is desired the stem may be replaced by aspecial stem made in extra long lengths such as shown in Figure 8. Inthis form the tubular stem is long enough to incorporate a pair of thewooden cores. These are the same as standard and the stem is simply longenough to hold the two cores, the smoke passing from one core to theother through the holes in the ends.

It will be understood that pipe stems may be made to contain one, two ormore of the cores described.` A very light soft wood is used and thetubev comprising vthe stem is a. thin gauge aluminum, so that even whenan extra long length ofstem is provided the pipe is not over heavy. Thedispensing with the stem portion of the bowl materially affects thiscondition.

It is found that pipe smokers can enjoy the smoking of this pipe forexceedingly long periods without burningthe tongue and without everhaving the disagreeable experience of having ashes, moisture or nicotinecondensate pass through the stem to the tongue.

It will be understood that the stem unit can be used with various pipebowls or with cigar or cigarette holders.

What I claim as my invention is:-

l. A tobacco pipe having a stemless bowl provided with a threaded oriceleading to the interior thereof, a tubular stem having one end thereofswedged inwardly to a reduced size and threaded to t into said threadedoriiice of the bowl and having its other end swedged inwardly to areduced size to fit into a mouthpiece, a core having a plurality oflongitudinal grooves in the periphery separated by dividing walls, saidWalls having inter-connecting notches to form longitudinal circuitouspassages, holes extending from aplurality of said circuitous passages toone end of the core, and holes extending from the opposite end of saidplurality of circuitous passages through the opposite end of the coreproviding separated smoke passages joined at opposite ends of the core.

2. A tobacco pipe comprising a bowl, a tubular stem having a reduced endadapted to be secured in said bowl and having a reduced end insertedinto a mouthpiece, and a core sealed between the reduced ends of saidstem having a plurality of parallel longitudinal grooves arranged in itsperiphery, said grooves being connected by cross notches at oppositeends in groups of odd number to form a plurality of passages extendingfrom the bowl end to the stem end, back to the bowl and then back to thestem end, each group of grooves having a hole connected with the bowland a hole connected with the stem end, said groups providing aplurality of separate circuitous smoke passages.

3. A tobacco pipe comprising a bowl having a. threaded orilice, a thinmetal tube having one end reduced and threaded to t said bowl orifice, aplurality of cores arranged in series in said tube in end to endrelation each having a plurality of longitudinal circuitous passagescommunicating .with the passages of the adjacent core through the ends,and a mouthpiece secured to the outer end of the tube.

4. A stem for cooling smoke in passage therethrough, and core meansco-operating with said stem to provide a plurality of back and forthseparate circuitous passages each of which is of greater length thansaid core means and each of which is normally open to the passage ofsmoke whereby when one of said circuitous passages becomes blocked withcondensation or a particle of tobacco, the remaining circuitous passageor passages will continue to direct the smoke in a circuitous path orpaths within said stem.

LOUIS L. MARTIN.

